The influence of climate and tectonics on uplift and denudation of the Terra Nova Bay Region (Transantarktisches Gebirge)

气候和构造对特拉诺瓦湾地区（横贯南极山脉）隆起和剥蚀的影响

• 批准号: 131296851
• 负责人: Professor Dr. Frank Lisker
• 金额: --
• 依托单位: Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/131296851?language=en
• 关键词: influence; climate; tectonics; uplift; denudation; influence; climate; tectonics; uplift; denudation

The Terra Nova Bay region forms a segment of the Transantarctic Mountains (TAM) in the western Ross Sea that is characterized by extreme landscape contrasts. There, a high Alpine coastal morphology developed in immediate vicinity to high-elevated inland plateaus and deep, structurally defined glacial troughs. Structural geology, geomorphological observation and sampling of basement and cover rocks in this region during the expedition BGR GANOVEX X (2009/10) will provide the ground truth for the subsequent application of thermochronological techniques (fission track and (UTh- Sm)/He analyses). Based on these data and thermal history modelling, the regional uplift and denudation history of the Terra Nova Bay region will be constrained with the four main topics: (1) the evolution of a Cretaceous “Victoria Basin” on the continental crust of SE Australia and the western Ross Sea, (2) the diachronous rifting processes across the two escarpments of Pacific passive margin and West Antarctic rift shoulder/ TAM, (3) timing and amount of the final denudation of the TAM since the Eocene/ Oligocene, and (4) quantification and explanation of development of landscape contrasts within the Terra Nova Bay region resulting from the interplay between climate, tectonics and lithology. This aspect also comprises implications for the long-term climate evolution on the margin of the East Antarctic Craton.

Terra Nova湾地区在西罗斯海构成了跨巨山（TAM）的一部分，其特征是极端景观对比。在那里，高山的沿海形态在附近发展到高度高的内陆高原和深层，结构上定义的冰川疾病。在Expedition BGR Ganovex X（2009/10）期间，结构地质，地下室观察和覆盖该地区的岩石的采样将为随后应用热量技术技术（裂变轨迹和（UTH- SMS）/他分析）提供基础真相。根据这些数据和热历史的建模，Terra Nova湾地区的区域隆升和剥夺历史将受到四个主要主题的约束：（1）在SE澳大利亚大陆和西部罗斯海和西部罗斯海的大陆地壳上的一个白垩纪“维多利亚盆地”的演变，（2）（2）（2）在两种直觉上的流动过程，并伴随着陪同的陪同。 （3）自始新世/渐新世以来，TAM的最终剥夺的时间和数量，以及（4）由于气候，构造和岩性学之间的相互作用而导致的Terra Nova湾地区景观对比的数量和解释。这一方面还包含对东南极克拉顿边缘的长期气候演变的影响。